kingspan kooltherm k8 insulation

Kingspan K8 Insulation

Kingspan K8 Insulation is a phenolic cavity wall insulation board for partial fill cavity construction. This high performance insulation board can have a thermal conductivity as low as 0.020 W/m-K . Of course this depends on the other products used in the overall construction. Kooltherm K8 insulation has a phenolic foam rigid thermoset core and low emissivity foil facings which significantly increase the thermal resistance in your cavity wall construction.

Being a high performance insulation board this can help save on the usage of insulation on the internal side of external walls.

This cavity wall insulation meets NHBC technical requirements when used with a 50 mm residual cavity. Whilst a clear cavity is maintained the product resists moisture penetration. Kingspan K8 Insulation is manufactured using a zero ozone depletion and low global warming blowing agent. Consequently the production of K8 is as eco friendly as it can be. Kooltherm K8 cavity wall insulation is easy to handle and install. Being 1200×450 board size it is designed to suit standard wall tie spacing. With the ability to cut with a fine tooth saw or stanley knife adds to the ease of installation.

For any further information please see the product file below.

Alternatively please do call our friendly national sales office for the latest best price deals.

Please note this Kooltherm is now unavailable and has been replaced with Kingspan Kooltherm K108

Please visit the updated item page from our Kingspan menu.

Buy Kingspan K8 Insulation

SPECIFICATION: 20mm – 150mm
SIZE: 1200mm X 450mm
SEE OUR BLOG ABOUT ALL NEW Kingspan Kooltherm Insulation

Special offer
Kingspan K8 Insulation

48 sheet deal
Size: 1200 x 450
Thick: 75mm
Only £POA.00 + vat
This product has been replaced with K108 please visit other page
Quote: KIN K8

Buy from our online store
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Fantastic Company. Helped with the order from start to finish. Even had an issue my end with the payment and they couldn’t be more helpful.

Mike Reynolds

Ordered Celotex insulation from this company for the first time last week and I will definately be back again. Good price and delivery 2 days later thankyou.


Matt Chapman, MC Construction

After days of trying to order some Rockwool from suppliers who never got back to me or quoted silly prices, my enquiry to BMD was answered in minutes politely and with clear knowledge of the products and delivery arranged on the phone all at a great price. Top marks for A1 service and product knowledge.

Rich Jenn

Thanks for my order great service

Yanislav Molkiva,

Thanks for saving my bacon with next day delivery will be back when I need some more Insulation.

Scott Ainsdale, SA Electrical

Purchsed our floor and wall insulation from this company, they are very helpful and went through the options available to me. after searching about the total price was the best i had so i gave them the order. Deliervy was made in 2 days and everything was fine. I will use them again for the next part of my building project.

James Kergan, JK Building services

Good price, good product great service. Thank you

Julie Rhodes,

Excellent company, Jason gave us a really good price and the items were delivered 2 days later much quicker than anyone else could offer. even the delivery driver was incredibly helpful, honestly can’t fault them Jacqui

Jacqueline Jelley,

Very happy with the service we received. Fantastic product at a fantastic price. Cant recommend Jason and the team highly enough. Ordered during Covid-19 when everything was slightly crazy and delayed and Jason called and said they had a lorry in our area so could deliver the very next day! Thank you guys for 5 star service, will be back in the future . All the best, Lacey. Travellers Finds Ltd

Lacey Griffiths, Travellers Finds Ltd

Great service, goods supplied on time , very satisfied

Alan Gibbs

Dont normally leave reviews but they helped me with products through out my selfbuild and saved me a lot of money

Ady Moon, Moon Building

Ordered online as it was the weekend , recieved a call to arrange delivery day on the Monday morning . all goods arrived in great condition and on the day they said.

Sue Brenner, Holistic regen

Awesome guys sorted me out when i didnt have a clue what to order top geezers

Badders, Holy smoke Vape store

As described quick delivery and good condition thankyou

Nick Wilson

Excellent price and delivery what more can i say , keep it up BMD


Nice to deal with, quick delivery and cheap prices.

Simon Berrinfield

Good for cheap insulation, i bought some celotex from them and it was delivered last week, it was a lot cheaper than anyone else in my area. i’m very happy with this service.

Rav Kumar

Top Service From quote to delivery can’t get any better thanks

C Lewis, C Lewis Building

As a small building company we find that BMD will equal or beat our trade depot plus we get free delivery too !!, Also we can get everything in one order and being able to talk to an actual person rather than clicking on a website means we get the service we want. saves time and money whats not to like ? :-)

Clemency Bedford, Bedford Building Maintenance